FIELD: precious metal metallurgy.
SUBSTANCE: invention can be used for selective recovery of gold from arseno-pyrite gravitational and flotation concentrates at gold-recovery plants when performing adjustment of gold-containing products to refining conditions. Process comprises recovering gold from arseno-pyrite gold-ore concentrates into molten lead in presence of alkali (NaOH) at vigorous stirring with blade stirrer. Process is carried out at 330-350°C and concentrate-to-alkali weight ratio 1:(0.8-1) for 8-10 min, while agitating phases.
EFFECT: reduced consumption of alkali and lowered temperature at high rate of recovering gold and silver into molten lead.
4 ex
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Authors
Dates
2008-04-10—Published
2006-08-02—Filed